Agitator.



N. D. NIELSEN.

AGITATOR.

APPLICATION FILED SEPT. 4, \sn.

Patented J une 4, 1918;

2 SHEETS-SHEET 1 N. D.- NIELSEN.

AGITATOR. APPLICATION HLED S EPT. 4. 1917 Patented June 4, 1918.

2 SHEETS-SHEET 2,

NIELS ID. NIELSEN, OF ELYRIA, OHIO.

AGI'IATOR.

Specification 01 Letters Patent.

Patented June 4, 191 8.

Application filed September 4. 1917. Serial No. 189,712.

To all w/wm it may concern:

Be it known that l, Nmm D. NIELSEN, a citizen of the United States, residin at Elyria, in the county of Lorain and btale of Ohio, have invented certain new and usc ful Improvements in Agitators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it apperlains to make and use the same.

My invention relates to improvements in apparatus for agitating the rontents of such vessels as tanks. vats and the like.

One of the objects of mv invention is to provide means which wil more quickly, thoroughly, efi'ectively and uniformly expose the contents of the tank to the heating or cooling effect of the walls of the containing vesseL- It is highly desirable to realize these results by the use of cheap and convenient devices for that purpose. I aim to pro vide apparatus cheap to construct and cheap and convenient to operate.

It will be obvious also that my invention may be employed for other uses and realize other results.

These and other objects of my invention and the invention itself will be better un- (lei-stood from a description of an embodiment of the invention.

Figure 1 is a top plan view. of apparatus showin an embodiment of my invention. Fig. 2 1s a sectional view through the line 22 of Fig. 1. Figs. 3 and 4- are similar views of a second embodiment of my inven tion.

Referring now to the drawing and to the embodiment of the invention shown therein, at 23 is shown a vessel which here consists of a tank subslantiall cylindrical in shape and prmided with a ottoln 4. In the embodiment shown the bottom is provided with a reenhant portion a which here is unifin'm y curved in the shape of a portion of a sphere and encompasses substantially the whole of the bottom of lhe vessel. It will be. ohions, however, that any suitable form of hollow or side. wall may be employed that will realize the results sought. in l lhe unention.

"llniluin as shown. is surrounded by a j ck -l. xhirh is closed al the top 7 and pro ided ooh a bottom 8, here shown as subsetii ey ll it. The jacket mar be em plop; d o ner i heating or cooling means.

Duets are shown at 5 and 9 l'or introducing lo the jiu-krt hearing or rooliug agencies. and a duel is shown at ll) for withdrawing the same from llujnrkil. lluulg are shou n at 11 and 12 for introducing or withdraw ing material from the tank iiseli'.

Supporting nulnlu-h l'olthe tank are shown :d 1;") Apparatus i prmhh-d l'or driving the H tu-m. ol' llntank laterally against the iniur null ol llio projerlion in and lln'nro against the nvliurd side walls of th-- val. lll'\ ii'o e pr hllly adapted for this plll'ljtlwl' is shoun ul H and consi t of a propi-llrr moulded upon a shaft 15, upon which their is monnled pullr. [13. through.

which the hall and propeller 1.3 are driven. "l'he. hnl't 15 extends through a hollow member 17, which pmses through an opening l5 in the tank and .in opening; in in the jacket. Packing. 20 and ii is employ-d about the hollow nn-mber 17 in the openings 15 and 19 to prevent leakage. rollnr J2 is pro vided on the oulsidc of the parking l to seruro [he same and retain it in position.

In the operation of the device. illustrated in the drawing the propeller is rolaled through the 'nllloy l6 and tho r ulenls of the tank are driven against the nun-r side of the projection 53. which dellerts il. upward so that it. strikes the opposite curved wall ot' the tank and not only passes upward over and downward in a cycle as illustrated by the arrows in Fig. 2, but is deflected hy the inclined side walls of the tank so that it runs around in either direction in a cycle, as illustrated in Fig. l. Some of the fluid Will be rarried around in a vertical plane by the propeller and rust against the. side walls of the tank at and adjacent the points X. The walls of the tank bein curved or inclined at these places, the liquid thus cast against these parts of the side walls will be. deflected at various angles into the stream indicated by the. arrows in Fi i. As will be clearly seen, the oontenls 0 the vat are not'only exposed lo the bottom, but are carried around the side walls thereof. 1 have found by actual experiment, that the time. required to change the temperature of the contents of a vessel in which-my invention is employed is nreatly reduced over that required in the o der methods, under the same conditions, and lhat the cooling or heating effect is much more uniform throughout the contents.

In the embodiment shown in Figs. Jiand 4, the vessel is shown at 3' and the ro jection here illustrated as a reentrant ottom at 5. The surrounding jacket is shown at 7. At 14 is shown an agitator which drives the liquid contents against the projection 5 and toward the agitator 140. The agitator 14 is mounted on a shaft 15 journaled in a bearing 17', which is mounted in the walls of the vessel 3' and the jacket 6. Suitable means are rovided, here shown as a pulley 16, througli which the agitator 14- ma be driven;

he pulley 16' is rigidly fastened on the shaft 17 and is rotated therewith. The jacket 6 is provided with a nipple 21' upon the end of which a cap 141 is connected and furnishes a bearing for the journal 17 The shaft 15' is provided with means to retain the shaft in position, and at the same time permitting a slight is of the parts. If the shaft moves to t e lift the conical surface 143 of the member 142 will engage the end of the journal 17' and should said shaft move to the right, the conical surface 144 will en age the inner wall of the cap 145 fastene by some suitable means, such as threads, to the end of part 17'. When the agitator 14' is operated to cause a thrust outward, the surface 144 will engage the inner part of the cap 145 furnishing a tightly closed thrust bearing and when 14' is operated to cause it to draw the parts to the left, the surface 143 will cause a similar tightly closed bearing on the other side.

At 140 is shown an agitator similar to 14 and mounted in the same manner as 14. The agitators are best operated in opposite directions, with the result that the agitation and other results explained in connection with the embodiment shown in Figs. 2 and 3 is increased.

It will be apparent to those skilled in the art that a tank having walls or a bottom of any suitable shape may be employed, and that any suitable means for driving the contents against such walls may be used.

I have illustrated this embodiment of my invention and these details for the purpose of describing my invention. I do not wish to be limited thereto, as it will be apparent to those skilled in the art that numerous and extensive departures may be made therefrom without departing from the spirit of the invention.

I claim 1. In a device of the class described, the combination of a tank having inclined side walls and an inwardly projecting upwardly inclined bottom, a propeller positioned closely adjacent a meeting lace of the bottom and side of said tan a shaft upon which the propeller is mounted extending through a side wall of the tank and adapted when operated to drive the contents of the tank against the inclined part of the bottom and thence against the oppositely inclined side walls of the tank.

2. In a device of the class described,-the combination of a curved walled tank having a projection in the bottom entirely below the top of the side walls of the tank and which inclines from one side upwardly toward the other side of the tank and means for driving the liquid contents of the tank against the inclined side of the bottom and thence against one of the walls of the tank.

3. In a device of the class described, the combination of a tank, an inclined projection in the bottom'submersible in saidtank and means for driving the contents of the tank in a horizontal direction against the inclined wall of the projection.

4. In a device of the class described, the combination of a tank having an inclined projection in the bottom thereof and a propeller in the tank mounted upon a horizontal shaft passing through the wall of the tank for driving the liquid contents of the tank against the inclined wallof said projection.

5. In a device of the class described, the combination of a cylindrical tank having an inclined projection in the bottom thereof, a propeller mounted in said tank ad'acent said bottom upon a horizontal sha passing through the side walls of the tank and adapted when operated to drive the liquid contents of the tank against the inclined wall of the projection which deflects it upwardly against the curved side walls of the tank.

6. The method of exposing the liquid contents of a tank in the walls thereof uniformly and quickly, which consists in driving the contents of the tank lroni a position closely adjacent. a meeting place of the bottom and side thereof agalnst an inclination of the bottom of the tank, deflecting the contents vcrtic lly against the inclined side walls of the tank, distributing the liquid to the right and left along the side walls and returning it to the pro ecting means.

7. In a device of the class described, the combination of means for projecting li uid in a solid stream, an inclination for de ecting the liquid verticall from its course, inclined walls in a tan against which the liquid is deflected and which in turn causes it to flow some to the right and some to the left back to the propelling means.

8. In a device of the class described, the conib.:.ation of a vessel provided with a pmjection having an inclined wall, means to drive the liquid contents oi said vessel against the inclined part of said wall from which it is drlievlcrl vertically and said vessel being provided with other inclined walls against which the liquid deflected from the lirstnanicd wall impinges and is deflected some to the right and some to the left back to the driving means.

9. In a device of the class described, the

combination of a cilindrieal tank having a reentrant bottom sp ericall curved substantially from side to side 0 the tank and a propeller on a horizontal shaft near the bottom of the tank for driving the contents of the tank against the curved reentrant bottom and the curved side walls of the tank.

10. In a device of the class described, the combination of means for projectin liquid in a solid stream, second means for drawing said stream of liquid away from the first means, an inclination for deflecting the stream pro'ected by the first named means and drawn y the second named means from its course, inclined walls of a tank a ainst which the deflected stream of liqui impinges and which in turn causes it to flow some to the right and some to,the left back to the first named ropelling means.

11. In a device of the class described, the combination of a tank cylindrical with res set to the vertical axis and having a vertically curved bottom, a propeller shaft passing through the side walls of the tank adjacent the bottom, a propeller on the end of the shaft in the tank and located close to the bottom of the tank and that portion of the side wall through which the shaft proacts.

1 12. In a device of the class described, the combination of a tank having curved side walls adapted to deflect fluid, projected in vertical planes thereagainst, toward the central art of the tank, a propeller shaft passing t rough a portion of the cylindrical walls of the tank near the bottom thereof and a propeller in said tank on said shaft located close to the portion of the c lindrical side walls through which the she rejects and near the bottom of the tank a apted when 13. In a device of the class described, the

combination of a tank having walls diverging in three directions from a position closely adjacent the meeting of the bottom and side walls of the tank, and a propeller in said tank adjacent said position, ada ted when operated to drive the contents 0 the tank a ainst such walls simultaneously.

14. n a device of the class described, the combination of a tank having walls diverging in three directions from a position where the bottom and side walls of the tank meet, a propeller closely adjacent said osition adapted when operated to drive t e contents of the tank against said walls simultaneously, and other walls opposite said walls for deflecting said contents and returnin it to said propeller.

15. n a device of the class described, the combination of a tank and a propeller mounted closely adjacent a meeting place of the bottom and side of the tank and adapted to be submerged as long as there is an appreciable amount of liquid in the tank, the vertical walls of the tank diverging from the propeller and adapted to deflect to the op oslte walls of the tank liquid thrown a out in a vertical plane and against said diverging walls toward the o posite walls of the tank, such opposite wa s being inclined to deflect the liquid back to the propeller.

In witness whereof, I have hereunto signed my name this 25 day of August,

N IELS D. NIELSEN. 

